/*
 * Copyright (c) 2019 Baidu, Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
package com.baidu.cloud.starlight.springcloud.configuration;

/**
 * Subscribe and get configuration info from config center Created by liuruisen on 2021/9/6.
 */
public interface Configuration {

    /**
     * subscribe
     * 
     * @param key
     * @param group
     * @param listener
     */
    void subscribeConfig(String key, String group, ConfigListener listener);

    /**
     * unsubscribe
     * 
     * @param key
     * @param group
     */
    void unsubscribeConfig(String key, String group);

    /**
     * Get config from cache
     * 
     * @param key
     * @param group
     * @return
     */
    Object getConfig(String key, String group);
}
